THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
To find the latest revision of this
publication, visit our website at:
www.mqpower.com
®
WHISPERWATT™ SERIES
MODEL DCA70SSJU4i
60Hz GENERATOR
(JOHN DEERE 4045HFG92 DIESEL ENGINE)
PARTS LIST NO. M2871300004
Revision #2 (04/09/14)
OperatiOn and parts Manual
PAGE 2 — DCA70SSJU4i
PROPOSITION 65 WARNING
Diesel engine exhaust and some of
DCA70SSJU4i
REPORTING SAFETY DEFECTS
If you believe that your vehicle has a defect that could cause a crash or could
cause injury or death, you should immediately inform the National Highway
Traffi c Safety Administration (NHTSA) in addition to notifying Multiquip Inc. at
1-800-421-1244.
If NHTSA receives similar complaints, it may open an investigation, and if it
fi nds that a safety defect exists in a group of vehicles, it may order a recall and
remedy campaign. However, NHTSA cannot become involved in individual
problems between you, your dealer, or Multiquip Inc.
To contact NHTSA, you may either call the Vehicle Safety Hotline toll-free
at 1-888-327-4236 (TTY: 1-800-424-9153), go to http://www.safercar.gov; or
write to:
Administrator
NHTSA
400 Seventh Street, SW.,
Washington, DC 20590
You can also obtain information about motor vehicle safety from
http://www.safercar.gov.
PAGE 4 — DCA70SSJU4i
TABLE OF CONTENTS
DCA70SSJU4i 60 Hz
Generator
Proposition 65 Warning ........................................... 2
Reporting Safety Defects ......................................... 3
Table Of Contents .................................................... 4
Safety Information .............................................. 6-11
Generator/Engine Specifications ........................... 12
Generator Dimensions ........................................... 13
Trailer Dimensions/Specifications .......................... 13
Installation ........................................................ 16-17
General Information ............................................... 18
Generator Major Components ............................... 19
Trailer Major Components ..................................... 20
Engine Control Unit (ECU) .................................... 21
Engine/Generator Control Panel............................ 22
Output Terminal Panel Familiarization .............. 23-25
Load Application .................................................... 26
Generator Outputs ................................................. 27
Generator Outputs/Gauge Reading ....................... 28
Output Terminal Panel Connections ................. 29-30
600 VAC Connections (Option) .............................. 31
Inspection/Setup ............................................... 32-35
Generator Start-Up Procedure (Manual Mode) 36-37
Generator Start-Up Procedure (Auto Mode) .......... 38
Generator Shut-Down Procedures ........................ 39
Generator/Engine Maintenance ........................ 40-46
Trailer Maintenance .......................................... 47-49
Trailer Guidelines .............................................. 50-64
Troubleshooting Diagnostics ................................. 66
Troubleshooting Generator ................................... 67
Troubleshooting Engine .................................... 68-69
Generator Wiring Diagram ..................................... 70
600 VAC Auto Transformer Wiring Diagram (Option) .. 71
Engine Wiring Diagram .......................................... 72
Battery Charger Wiring Diagram (Option) ............. 73
Water Heating Element Wiring Diagram (Option) .. 74
Explanation Of Code In Remarks Column............. 75
Suggested Spare Parts ......................................... 77
Component Drawings
Generator Assembly ......................................... 78-79
Control Box Assembly ...................................... 81-83
Engine And Radiator Assembly ........................ 84-87
Output Terminal Assembly ................................ 88-89
Battery Assembly ............................................. 90-91
Muffler Assembly ............................................. 92-93
Fuel Tank Assembly .......................................... 94-95
Enclosure Assembly ......................................... 96-99
Rubber Seals Assembly ............................... 100-101
Camlock Assembly ....................................... 102-103
Battery Charger Assembly............................ 104-105
Heating Element Assembly .......................... 106-107
3-Phase 600 VAC Transformer Assembly ..... 108-109
Trailer Assembly (TRLR70USH) ................... 110-111
Trailer Assembly (TRLR70USE) ................... 112-113
Nameplate And Decals Assembly ................ 114-117
Terms And Conditions Of Sale — Parts .............. 118
NOTICE
Specifications are subject to change without notice.
DCA70SSJU4i
NOTES
PAGE 6 — DCA70SSJU4i
SAFETY INFORMATION
Do not operate or service the equipment before reading the
entire manual. Safety precautions should be followed at all
times when operating this equipment. Failure to read and
understand the safety messages and operating instructions
could result in injury to yourself and others.
The four safety messages shown below will inform you
about potential hazards that could injure you or others. The
safety messages specifi cally address the level of exposure
to the operator and are preceded by one of four words:
or
DANGER
Indicates a hazardous situation which, if not avoided,
result in DEATH or
Indicates a hazardous situation which, if not avoided,
result in DEATH or
Indicates a hazardous situation which, if not avoided,
result in or
NOTICE
Addresses practices not related to personal injury.
Potential hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.
DCA70SSJU4i
SAFETY INFORMATION
operate this equipment without proper protective
clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.
operate this equipment when not
feeling well due to fatigue, illness or when
under medication.
operate this equipment under the infl uence of
drugs or alcohol.
check the equipment for loosened threads or
bolts before starting.
DO NOT use the equipment for any purpose other than
its intended purposes or applications.
NOTICE
This equipment should only be operated by trained and
qualifi ed personnel 18 years of age and older.
Whenever necessary, replace nameplate, operation and
safety decals when they become diffi cult read.
Manufacturer does not assume responsibility for any
accident due to equipment modifi cations. Unauthorized
equipment modifi cation will void all warranties.
use accessories or attachments that are not
recommended by MQ Power for this equipment. Damage
to the equipment and/or injury to user may result.
know the location of the nearest
know the location of the nearest
know the location of the nearest
phone or
Also, know the
phone numbers of the nearest ambulance, doctor
and
This information will be invaluable in
the case of an emergency.
GENERATOR SAFETY
DANGER
operate the equipment in an explosive
atmosphere or near combustible materials. An
explosion or fi re could result causing severe
disconnect any
These devices are intended for operator safety.
Disconnection of these devices can cause severe injury,
bodily harm or even death. Disconnection of any of these
devices will void all warranties.
lubricate components or attempt service on a
running machine.
NOTICE
ensure generator is on level ground before use.
keep the machine in proper running condition.
Fix damage to machine and replace any broken parts
immediately.
store equipment properly when it is not being
used. Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel
PAGE 8 — DCA70SSJU4i
SAFETY INFORMATION
DANGER
The engine fuel exhaust gases contain poisonous carbon
monoxide. This gas is colorless and odorless, and can
cause death if inhaled.
The engine of this equipment
requires an adequate free
fl ow of cooling air.
operate this equipment in
any enclosed or narrow area
where free fl ow of the air is
restricted. If the air fl ow is
restricted it will cause injury to people and property and
serious damage to the equipment or engine.
DO NOT place hands or fingers inside engine
compartment when engine is running.
operate the engine with heat shields or
guards removed.
Keep fi ngers, hands hair and clothing away
from all moving parts to prevent injury.
DO NOT remove the radiator cap while the
engine is hot. High pressure boiling water
will gush out of the radiator and severely
scald any persons in the general area of
the generator.
DO NOT remove the coolant drain plug while the engine
is hot. Hot coolant will gush out of the coolant tank and
severely scald any persons in the general area of the
generator.
DO NOT remove the engine oil drain plug while the
engine is hot. Hot oil will gush out of the oil tank and
severely scald any persons in the general area of the
generator.
touch the hot exhaust manifold,
muffl er or cylinder. Allow these parts to cool
before servicing equipment.
NOTICE
run engine without an air fi lter or with a dirty air
fi lter. Severe engine damage may occur. Service air fi lter
frequently to prevent engine malfunction.
tamper with the factory settings
of the engine or engine governor. Damage
to the engine or equipment can result
if operating in speed ranges above the
maximum allowable.
Wet stacking is a common problem with diesel engines
which are operated for extended periods with light or
no load applied. When a diesel engine operates without
suffi cient load (less than 40% of the rated output), it will
not operate at its optimum temperature. This will allow
unburned fuel to accumulate in the exhaust system,
which can foul the fuel injectors, engine valves and
exhaust system, including turbochargers, and reduce
the operating performance.
In order for a diesel engine to operate at peak effi ciency,
it must be able to provide fuel and air in the proper ratio
and at a high enough engine temperature for the engine
to completely burn all of the fuel.
Wet stacking does not usually cause any permanent
damage and can be alleviated if additional load is
applied to relieve the condition. It can reduce the system
performance and increase maintenance. Applying an
increasing load over a period of time until the excess
fuel is burned off and the system capacity is reached
usually can repair the condition. This can take several
hours to burn off the accumulated unburned fuel.
State Health Safety Codes and Public Resources
Codes specify that in certain locations, spark arresters
must be used on internal combustion engines that use
hydrocarbon fuels. A spark arrester is a device designed
to prevent accidental discharge of sparks or fl ames
from the engine exhaust. Spark arresters are qualifi ed
and rated by the United States Forest Service for this
purpose. In order to comply with local laws regarding
spark arresters, consult the engine distributor or the
local Health and Safety Administrator.
DCA70SSJU4i
SAFETY INFORMATION
DANGER
DO NOT start the engine near spilled fuel or combustible
fl uids. Diesel fuel is extremely fl ammable and its vapors
can cause an explosion if ignited.
refuel in a well-ventilated area, away from
sparks and open fl ames.
use extreme caution when working with
fl ammable liquids.
DO NOT fi ll the fuel tank while the engine is running
or hot.
DO NOT overfi ll tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or sparks from
the ignition system.
Store fuel in appropriate containers, in well-ventilated
areas and away from sparks and fl ames.
use fuel as a cleaning agent.
DO NOT smoke around or near the
equipment. Fire or explosion could result
from fuel vapors or if fuel is spilled on a
hot engine.
Check with your local county or state safety
towing regulations, in addition to meeting
Department of Transportation (DOT)
Safety Towing Regulations, before towing
your generator.
Refer to MQ Power trailer manual for additional safety
information.
In order to reduce the possibility of an accident while
transporting the generator on public roads,
make sure the trailer that supports the generator and
the towing vehicle are mechanically sound and in good
operating condition.
shutdown engine before transporting
Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer “gross
vehicle weight rating.”
inspect the hitch and coupling for wear.
tow a trailer with defective hitches, couplings, chains, etc.
Check the tire air pressure on both towing vehicle and
trailer.
Trailer tires should be infl ated to 50 psi cold.
Also check the tire tread wear on both vehicles.
make sure the trailer is equipped with a
safety
properly
attach trailer’s safety chains to towing
vehicle.
make sure the vehicle and trailer directional,
backup, brake and trailer lights are connected and
working properly.
DOT Requirements include the following:
•Connectandtestelectricbrakeoperation.
•Secure portablepowercablesin cable tray withtie
wraps.
The maximum speed for highway towing is
unless
posted otherwise. Recommended off-road towing is not to
exceed or less depending on type of terrain.
Avoid sudden stops and starts. This can cause skidding,
or jack-knifi ng. Smooth, gradual starts and stops will
improve towing.
Avoid sharp turns to prevent rolling.
Trailer should be adjusted to a level position at all times
when towing.
Raise and lock trailer wheel stand in up position when
towing.
Place chock blocks underneath wheel to prevent
rolling
while parked.
Place support blocks
underneath the trailer’s bumper
to prevent tipping while parked.
Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.
i
SAFETY INFORMATION
DANGER
DO NOT touch output terminals during
operation. Contact with output terminals
during operation can cause electrocution,
The electrical voltage required to
operate the generator can cause severe
injury or even death through physical contact with live
circuits. Turn generator and all circuit breakers OFF
before performing maintenance on the generator or
making contact with output terminals.
insert any objects into the output
receptacles during operation. This is
extremely dangerous. The possibility exists
of electrical shock, electrocution or
Backfeed to a utility system can cause
electrocution and/or property damage.
connect the generator to a
building’s electrical system without
a transfer switch or other approved
device. All installations should be
performed by a licensed electrician in accordance with
all applicable laws and electrical codes. Failure to do so
could result in electrical shock or burn, causing serious
DANGER
let power cords or cables
while AC power from the
generator is being transferred to a load.
use damaged or worn cables or cords when
connecting equipment to generator. Inspect for cuts in
the insulation.
grab or touch a live power
cord or cable with wet hands. The
possibility exists of electrical shock,
Make sure power cables are securely connected to the
generator’s output receptacles. Incorrect connections
may cause electrical shock and damage to the
generator.
NOTICE
make certain that proper power or extension
cord has been selected for the job. See Cable Selection
Chart in this manual.
Grounding Safety
DANGER
make sure that electrical circuits are properly
grounded to a suitable earth ground (ground rod) per
the National Electrical Code (NEC) and local codes
before operating generator.
Severe injury or death by
electrocution
can result from operating an ungrounded
generator.
use gas piping as an electrical ground.
DANGER
DO NOT
drop the battery. There is a possibility that the
battery will explode.
DO NOT expose the battery to open fl ames,
sparks, cigarettes, etc. The battery contains
combustible gases and liquids. If these
gases and liquids come into contact with a
fl ame or spark, an explosion could occur.
wear safety glasses when
handling the battery to avoid eye irritation.
The battery contains acids that can cause
injury to the eyes and skin.
Use well-insulated gloves when picking up the battery.
keep the battery charged. If the battery is not
charged, combustible gas will build up.
recharge the battery in a well-ventilated
environment to avoid the risk of a dangerous concentration
of combustible gasses.
DCA70SSJU4i
SAFETY INFORMATION
If the battery liquid (dilute sulfuric acid) comes into
contact with clothing or skin, rinse skin or clothing
immediately with plenty of water.
If the battery liquid (dilute sulfuric acid) comes into
contact with eyes, rinse eyes immediately with plenty
of water and contact the nearest doctor or hospital to
seek medical attention.
disconnect the
before performing service on the generator.
keep battery cables in good working condition.
Repair or replace all worn cables.
NOTICE
Decommissioning is a controlled process used to safely
retire a piece of equipment that is no longer serviceable.
If the equipment poses an unacceptable and unrepairable
safety risk due to wear or damage or is no longer cost
effective to maintain (beyond life-cycle reliability) and is to
be decommissioned (demolition and dismantlement),be
sure to follow rules below.
DO NOT pour waste or oil directly onto the ground, down
a drain or into any water source.
Contact your country's Department of
Public Works or recycling agency in your
area and arrange for proper disposal of
any electrical components, waste or oil
associated with this equipment.
When the life cycle of this equipment is over, remove
battery and bring to appropriate facility for lead
reclamation. Use safety precautions when handling
batteries that contain sulfuric acid.
When the life cycle of this equipment is over, it is
recommended that the trowel frame and all other metal
parts be sent to a recycling center.
Metal recycling involves the collection of metal from
discarded products and its transformation into raw
materials to use in manufacturing a new product.
Recyclers and manufacturers alike promote the process
of recycling metal. Using a metal recycling center
promotes energy cost savings.
NOTICE
The diesel engine used in this equipment has been
designed to reduce harmful levels of carbon monoxide
(CO), hydrocarbons (HC) and nitrogen oxides (NOx)
contained in diesel exhaust emissions.
This engine has been certifi ed to meet US EPA Evaporative
emissions requirements in the installed confi guration.
Attempting to modify or make adjustments to the engine
emission system by unauthorized personnel without proper
training could damage the equipment or create an unsafe
condition.
Additionally, modifying the fuel system may adversely affect
evaporative emissions, resulting in fi nes or other penalties.
The emission control label is an integral part of the emission
system and is strictly controlled by regulations.
The label must remain with the engine for its entire life.
If a replacement emission label is needed, please contact
your authorized engine distributor.
i
GENERATOR/ENGINE SPECIFICATIONS
Generator Specifications
DCA70SSJU4i
Type
Revolving field, self ventilated,
open protected type synchronous generator
Armature Connection Star with Neutral Zigzag
Phase
3Ø 3Ø
Standby Output
61.6 kW (77 kVA) 44 kW
Prime Output
56 kW (70 kVA) 40 kW
208Y/120, 220Y/127, 240Y/139 N/A
416Y/240, 440Y/254, 480Y/277 N/A
N/A 240/120
Power Factor
0.8 1.0
Frequency
60 Hz
Speed
1800 rpm
Single Phase, 60 Hz
4.8 Kw (2.4 kW x 2)
Dry Weight
3,594 lbs. (1,630 kg)
Wet Weight
4,410 lbs. (2,000 kg)
Engine Specifications
John Deere 4045HFG92 Interim Tier 4
Type
Water-cooled, direct injection, turbo-charged
air cooled EGR
4 cylinders
4.17 in. x 5.00 in. (106 mm x 127 mm)
Displacement
275 cu. in. (4.5 liter)
Rated Output
97 HP at 1800 rpm
Starting
Electric
Coolant Capacity
5.9 gal. (22.4 liters)
1
3.9 gal. (14.7 liters)
2
API service class CJ-4 SAE 15W-40
Fuel Type
#2 Diesel Fuel (Ultra low sulfur diesel fuel only)
25.9 gal. (98 liters)
Fuel Tank Capacity
103 gal. (390 liters)
Fuel Consumption
4.3 gal. (16.2 L)/hr at full load 3.4 gal. (12.7 L)/hr at
2.7 gal. (10.1 L)/hr at 2.0 gal. (7.4 L)/hr at
27 (CCA 0°F 800A) X 1
Includes engine and radiator hoses
2
Includes filters
DCA70SSJU4i
GENERATOR DIMENSIONS
Generator Dimensions
Reference
A 39.25 (997) E 39.25 (997)
B 32.80 (883) F 105.12 (2,670)
C 39.25 (997) G 68.30 (1,735)
D 32.28 (820) H 37.40 (950)
Figure 1. Dimensions
i
TRAILER DIMENSIONS/SPECIFICATIONS
Figure 2. Trailer Dimensions
D
C
B
A
G
F
E
TOP VIEW
SIDE VIEW
Trailer Dimensions
Reference
A 169.4 (4,938) E 24.2 (615)
B 47.5 (1,207) F 20.2 (513)
C 60 (1,524) G 20.35 (517)
D 72.5 (1,842)
Gross Vehicle Weight Rating (GVWR) 7,000 lbs. (3,175 kg)
Gross Axle Weight Rating (GAWR) Each 3,500 lbs. (1,588 kg)
Actuator Rating 8,000 lbs. (3,629 kg)
Coupler Types
Adjustable 2-inch Ball Coupler
Adjustable 2-5/16-inch Ball Couple
Adjustable 3-inch Pintle-eye Coupler
Tire Size ST205/75D15 LR-C
Tire Load Rating 1,820 lbs./825 kg (ea.)
Wheel Bolt Pattern 5 Lug on 4.5 in.
Hydraulic Brakes (Standard) Hydraulic-actuated Drum Brakes (all axles)
Electric Brakes (Option) Electric-actuated Drum Brakes (all axles)
Bolt-on Electric Brake Coupler Plate Option
Electric Breakaway Safety Device electric-actuated brakes) Option
Tongue Mounted Swivel Jack (Standard) 3,000 lbs. (1,361 kg)
Tongue Bolt-On Jack (Option) 8,000 lbs. (3,629 kg) Option
Axle Tandem
Suspension Torsion
Lights
D.O.T. Approved Tail Lamps, Stop Lamps, Turn
Signal Lamps, Side Marker Lamps
Weight (Approximate) 960 lbs. (435 kg)
DCA70SSJU4i
NOTES
i
INSTALLATION
Figure 3. Typical Generator Grounding Application
DCA70SSJU4i
INSTALLATION
Install the generator in a area that is free of debris,
bystanders, and overhead obstructions. Make sure the
generator is on secure level ground so that it cannot slide
or shift around. Also install the generator in a manner so
that the exhaust will not be discharged in the direction of
nearby homes.
The installation site must be relatively free from moisture
and dust. All electrical equipment should be protected from
excessive moisture. Failure to do will result in deterioration
of the insulation and will result in short circuits and
grounding.
Foreign materials such as dust, sand, lint and abrasive
materials have a tendency to cause excessive wear to
engine and alternator parts.
Exhaust gases from diesel engines are extremely
poisonous. Whenever an engine is installed indoors the
exhaust fumes must be vented to the outside. The engine
should be installed at least two feet from any outside wall.
Using an exhaust pipe which is too long or too small can
cause excessive back pressure which will cause the engine
to heat excessively and possibly burn the valves.
The generator must be mounted on a solid foundation (such
as concrete) and set firmly on the foundation to isolate
vibration of the generator when it is running. The generator
must set at least 6 inches above the floor or grade level (in
accordance to NFPA 110, Chapter 5-4.1). DO NOT remove
the metal skids on the bottom of the generator. They are
to resist damage to the bottom of the generator and to
maintain alignment.
Pay close attention to ventilation when operating the
generator inside tunnels and caves. The engine exhaust
contains noxious elements. Engine exhaust must be
routed to a ventilated area.
To guard against electrical shock and possible damage to
the equipment, it is important to provide a good EARTH
ground (Figure 3).
Article 250 (Grounding) of the National Electrical Code
(NEC) provides guide lines for proper grounding and
specifies that the cable ground shall be connected to the
grounding system of the building as close to the point of
cable entry as practical.
NEC articles 250-64(b) and 250-66 set the following
grounding requirements:
1. Use one of the following wire types to connect the
generator to earth ground.
a. Copper - 8 AWG (5.3 mm
2
)
b. Aluminum - 6 AWG (8.4 mm
2
)
2. When grounding the generator (Figure 2) connect the
ground cable between the lock washer and the nut on
the generator and tighten the nut fully. Connect the
other end of the ground cable to earth ground.
3. NEC article 250-52(c) specifies that the earth ground rod
should be buried a minimum of 8 ft. into the ground.
NOTICE
When connecting the generator to any buildings
electrical system consult with a licensed
electrician.
NOTICE
This generator has a permanent bonding conductor
between the generator stator windings and the frame.
i
GENERATOR
This generator (Figure 4) is designed as a high quality
portable (requires a trailer for transport) power source for
telecom sites, lighting facilities, power tools, submersible
pumps and other industrial and construction machinery.
The “Operating Panel” is provided with the following:
ECU Controller
Gauge Unit Assembly
•Oil Pressure Gauge
•Water Temperature Gauge
•Charging Voltmeter
•Fuel Gauge
•Tachometer
Panel Light/Panel Light Switch
Hour Check Button
Auto Start/Stop Switch
Fuel Leak Detected Alarm Lamp
The “Control Panel” is provided with the following:
Frequency Meter (Hz)
AC Ammeter (Amps)
AC Voltmeter (Volts)
Ammeter Change-Over Switch
Voltmeter Change-Over Switch
Voltage Regulator
3-Pole, 200 amp Main Circuit Breaker
“Control Box” (located behind Control Panel)
•Automatic Voltage Regulator
•Current Transformer
•Over-Current Relay
•Starter Relay
The “Output Terminal Panel” is provided with the following:
Three 120/240V output receptacles (CS-6369), 50A
Three auxiliary circuit breakers, 50A
Two 120V output receptacles (GFCI), 20A
Two GFCI circuit breakers, 20A
Eight output terminal lugs (3Ø power)
Ground lug
Battery Charger (Option)
Water Heating Element (Option)
Camlock Connector (Option)
600 VAC Output, Auto-Transformer (Option)
Each generator is equipped with the state of the art
Delta” excitation system. The open delta system consist
of an electrically independent winding wound among
stationary windings of the AC output section.
There are four connections of the open delta A, B, C and
D. During steady state loads, the power from the voltage
regulator is supplied from the parallel connections of A to
B, A to D, and C to D. These three phases of the voltage
input to the voltage regulator are then rectified and are the
excitation current for the exciter section.
When a heavy load, such as a motor starting or a short
circuit occurs, the automatic voltage regulator (AVR)
switches the configuration of the open delta to the series
connection of B to C. This has the effect of adding the
voltages of each phase to provide higher excitation to the
exciter section and thus better voltage response during the
application of heavy loads.
The connections of the AVR to the AC output windings are
for sensing only. No power is required from these windings.
The open-delta design provides virtually unlimited excitation
current, offering maximum motor starting capabilities. The
excitation does not have a “fixed ceiling” and responds
according the demands of the required load.
This generator is powered by a 4 cylinder, 4-cycle water
cooled, direct injection, turbocharged, air cooled and EGR
John Deere 4045HFG92 diesel engine. This engine is
designed to meet every performance requirement for the
generator. Reference Table 2 for engine specifications.
In keeping with MQ Power’s policy of constantly improving
its products, the specifications quoted herein are subject
to change without prior notice.
The electric governor system controls the RPMs of the engine.
When the engine demand increases or decreases, the
governor system regulates the frequency variation to ±.25%.
When electric power is to be provided to various tools or
loads at some distance from the generator, extension cords
are normally used. Cables should be sized to allow for
distance in length and amperage so that the voltage drop
between the generator and point of use (load) is held to
a minimum. Use the cable selection chart (Table 8) as a
guide for selecting proper extension cable size.
GENERAL INFORMATION
DCA70SSJU4i
GENERATOR MAJOR COMPONENTS
1 Muffler Assembly
2 Enclosure Assembly
3 Voltage Selector Switch Assembly
4 Generator Assembly
5 Output Terminal Assembly
6 Battery Assembly
7 Engine Assembly
8 Fuel Tank Assembly
9 Circuit Breaker Assembly
10 Auto Start/Stop Controller Assembly
11 Gauge Unit Assembly
12 Generator Control Panel Assembly
Figure 4. GeneratorMajor Components
PAGE 20 — DCA70SSJU4i
TRAILER MAJOR COMPONENTS
Figure 5. Trailer Major Components
1
2
3
4
5
7
6
8
9
10
11
Figure 5 shows the location of the trailer components and
the 600 VAC option. The function of each component is
described below:
1. — Voltage converter
transformer. Converts the generator's 3Ø, 480 output
voltage to 3Ø, 600 VAC.
2. Tongue Jackstand — Use this jackstand to support
the trailer tongue when attaching the generator to a
towing vehicle
3. — Attach the trailer's 2-5/16 inch
ball coupler or 3-inch pintle coupler to the towing vehicle.
Use only the specified ball diameter as indicated on
your coupler. Use of any other ball diameter will create
an extremely dangerous condition which can result in
separation of the coupler and ball or ball failure.
4. Safety Chain — Always attach safety chains to the
towing vehicle. use the trailer with the safety
chain unattached. Make sure safety chains are crossed
when towing.
5. Side Reflectors — There are two amber reflectors
located on the side of the trailer. These reflectors provide
better visibility in dark conditions.
6. Tires — This trailer uses a ST205/75D15 LR-C
size
tire. Replace with only recommended tire size.
operate the trailer with bad or worn tires.
7. — Place blocks (not included as part
of the generator package) under each trailer wheel to
prevent rolling.
8. — Before towing the generator, make
sure that this light is operational and is working correctly.
use the trailer if this light is inoperative.
9. — This light illuminates the license plate.
Whenever towing of the generator is required, make sure
this light is operational.
10. — Before towing the generator, make
sure that this light is operational and is working correctly.
use the trailer if this light is inoperative.
11. — Contains 70 amp
breaker for 600 VAC operation.
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